Granted Patent
Utility
US 6,592,340 · App. 09/719,308
Control system for a vacuum pump used for removing liquid and a method of controlling said pump
Inventors:
Kaarlo Horo, Seppo Kupiainen
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Dec 11, 2000
Inventors
Kaarlo Horo
Seppo Kupiainen
Assignee (at issue)
Sulzer Pumpen AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.